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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (DERBY-4895) Thread local TableDescriptor#referencedColumnMap is not set to null when connection closes.
Date Wed, 10 Nov 2010 12:52:14 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dag H. Wanvik reassigned DERBY-4895:
------------------------------------

    Assignee: Dag H. Wanvik

> Thread local TableDescriptor#referencedColumnMap is not set to null when connection closes.
> -------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4895
>                 URL: https://issues.apache.org/jira/browse/DERBY-4895
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.5.1.1, 10.5.2.0, 10.5.3.0, 10.6.1.0, 10.6.2.1
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>            Priority: Minor
>         Attachments: derby-4895-a.diff, derby-4895-a.stat
>
>
> > This has been seen to cause error messages in TomCat, cf. this quote from a mail
on derby-user:
> > 
> > http://mail-archives.apache.org/mod_mbox/db-derby-user/201011.mbox/%3C7800E37B639BC345BC2AB40980B7C529180FB525@MERCMBX03R.na.SAS.com%3E
> > 
> > SEVERE: The web application [/MyApp] created a ThreadLocal with key of type [org.apache.derby.iapi.sq\
> > l.dictionary.TableDescriptor$1] (value [org.apache.derby.iapi.sql.dictionary.TableDescriptor$1@d133a3])\
> >  and a value of type [java.util.WeakHashMap] (value [{={1, 2, 3, 4}, =null, =null}])
but failed to remo\
> > ve it when the web application was stopped. This is very likely to create a memory
leak.

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